Combined angle shear and notcher



E. J. DREIS GOMBI NED ANGLE SHEAR AND NOTCHER Filed May 23 1922 II I ll [DI/VA ED J DEE/f Patented Get. 30, 1923.

PATENT OFFICE.

EDWARD J'. DREIS, OF SAN FRANCISCO, CALIFORNIA.

COMBINED ANGLE SHEAR AND NOTCHER.

Application filed May 23, 1922. Serial No. 563,070.

T all whom 2'2? may concern:

Be it known that I, EDWARD J. Dnnrs, a

citizen of the United States, residing at the city and county of San Francisco and State of California, have invented new and useful Improvements in Combined Angle Shears and Notchers, of whichthe following is a specification.

This invention relates to metal working machines, and particularly pertains toa combined shear and notcher.

It is the principal object of the present invention to generally improve and simplify machines of the character referred to, whereby to provide a machine carrying dies for operating upon metal which is fitted with an improved form of operating mechanism whereby the dies may be actuated by either simple or compound lever action.

In carrying out this invention I provide a frame carrying stationary dies and an operable head member carrying dies for cooperation of the dies carried by the frame. A novel operating mechanism for actuating the die carrying head member is provided whereby the latter may be optionally operated by direct or compound lever act-ion.

One form which the invention may assome is exemplified in the following description and illustrated by way of example in the accompanying drawings in which- Fig. 1 is a front elevation of a machine embodying the invention.

Fig. 2 is a vertical section through the same taken on line 2-2, of Fig. 1.

Fig. 3 is a view of the device in plan.

Referring more particularly to the drawings, A generally indicates a main frame, which in the present instance is formed in two sections. These sections are composed of base portions 12 and vertically disposed side frames 13. The sections 12 are secured together by bolts 14 and by a tie bolt connecting the side frames as at 15.

Journalled in the side frames 13 is a horizontally disposed shaft 16. Mounted on this shaft and disposed between the side frames 13 is a die head member 17. Secured on one side of the die head, as'at 18, is an upper notching die 19, which is adapted to co-act with a lower die 20 secured to the base, as at 21. Secured on the opposite side of the die head is an upper shearing knife 22, which is adapted to coact with a lower shearing knife 23 secured to the base as at 24:.

It should be stated that in the present instance the dies 19 and 20 are formed to cut a V-shaped notch in the flange of an angle bar when it is desired to angularly bend the latter, and that the shearing knives 22 and 23 are formed to shear an angle bar. It'is to be understood that various forms of dies may be substituted for those mentioned without departing from the spirit of the present invention.

As illustrated in Fig. 2, the upper portion of the die head member 18 is recessed or forked, as at 25, toaccommodate a heartshaped cam 26. This cam is mounted on a shaft 27 which is journalled in the side frames 13, as at 28, and extends parallel to the shaft 16. The cam 26 when partially rotated imparts movement to the die head 18. In other words, if the cam is partially rotated in one direction, the dies 19 and 20 will be brought in operation, but if the cam is rotated in the opposite direction the dies 22 and 23 willoperate.

To actuate the cam 26, a lever 29 is provided. This lever is mounted on a shaft 30 which is journalled in a yoke 31. This yoke is turnably mounted at one end on the shaft 27 as illustrated in Figs. 1 and 2. Also mounted on the shaft 30 is a pawl 82, which is formed with a double working face, as shown in Fig. 2, that it may be actuated to engage a ratchet 33 on both sides of its center to impart turning movement thereto in either direction. In other words, when it is desired to actuate the set of dies 23 and 24, the pawl is turned about the shaft 30 until one of its working faces engages the ratchet on the side adjacent the said dies. The lever is then swung in the direc tlon of the arrow at. The operation is similar when it is desired-to operate the dies 19 and 20, eXce t that the pawl and lever are swung in the opposite direction.

The ratchet 33 is formed integral with the cam 26 and, therefore movement imparted to the ratchet will be imparted to the cam. As stated, means are provided for operating the dies by the lever 29 through either direct or compound lever action. If the material to be worked on is comparatively light, and it is desired to operate the dies by direct leverage, a locking pin 34 is employed to look the yoke 31 to the lever 29. The fulcrum point of the lever 29 will then be at the center of the shaft 27. Vi hen the locking pin 34% is positioned as described the lever 29, the yoke 31 and the cam will operate as a unit after the pawl 32 has been placed in engagement with the ratchet 33. In other words, the force transmitted or applied to the lever 29 will be directly transmitted to the cam. The die head 17 will thus be actuated through simple lever action to actuate the selected set of dies- If the material to be worked on is comparatively heavy, the. lever action for operating the cam may be compounded. This may be accomplished by removing the locking pin 34, and thereby permit the teeth of a mutilated gear 36 formed at the lower end of the leverr29, to engage with teeth 37 formed on the top of one of the side frames 13. As the lever is turnably mounted on the shaft 30, movement impartedto the lever will cause contact between the stationary teeth 37 on the frame 13 and theteeth of the mutilated gear 36. This position is shown in dotted lines in Fig. 2. As the teeth mentioned engage, the point of contact therebetween will be the fulcrum point of the lever. Further movement of the lever 29 will'be transmitted to the yoke 31, the pawl 32, the ratchet and the cam 26, the latter actuatingthe die head. It will thus be seen that the pressure brought to bear on the lever is compounded when applied to the cam.

In operation the device is assembled as illustrated in the drawings. The metal or 7 material to be operated on may be placed in position between the selected set of dies.-

If conditions are such that direct leverage is SLliiiClGIlt to operate the device, the locking pin 34: is positioned as shown in Fig. 1. The

pawl 32 is then positioned on the ratchet adjacent the set of dies to be operated. Pressure may then be brought to bear on the lever 29 in the correct direction. This,.as

described, imparts turning movement to the cam 26 and consequently actuates the die head 17 to operate the set of dies selected.

Should it be'necessary to employ compound leverage to actuate the set of dies, the locking pin is removed. The pressure then brought to bear on the lever 29 willbe increased at the cam, due to the engagement of the teeth of the gear on the lever and the teeth formed on the frame 13 as previously described. Thus movement is imparted to the die head through the lever, the pawl and ratchet, and the cam. It is obvious that the use of the different sets of dies is optional, the operation of the device beingsimilar in eithcrinstance.

From the foregoing it is obvious that the device here disclosed provides a machine which is simple in construction and operation, and by the use of which various operations may be performed on various materials efficiently and with ease.

While I have shown the preferred form of my invention it is understood that various changes may be made in itsconstruction without departing from the spirit of the invention as defined in the appended claims.

Having thus described my invention, what I claim and desire to secure by Letters Patent is-- l. A device of the character described comprising a frame, a stationary die carried thereby, a head member pivoted in said frame and carrying a die for cooperation with said stationary die, a cam turnably mounted in the frame and operatively engaging said head. member for operating the same, a member adapted to be maintained ried thereby, a head member pivoted in said frame and carrying a die for cooperation with said stationary die, a cam turnably mounted in the frame and operatively engaging said head member for operating the same, a member adaptedto be maintained fixed with relation to said cam whereby theywill swing in unison, an operating lever pivoted to said member, teeth formed on said lever concentric with the pivotal point thereof, teeth formed on the frame adapted to be engaged by the teeth on said lever whereby swinging movement imparted to said lever will cause rotation of said cam through compound lever action, said rotation of the cam actuating the head member and thereby operating the dies.

3. A device of the character described comprising a frame, a stationary die carried thereby, a head member pivoted in said frame and carrying a die for cooperation with said stationary die, a cam turnably mounted in the frame and operatively engaging said-head member for operating the same, a pivoted member adapted to swing concentrically about the center of said cam, means whereby said pivoted membermay be maintained fixed with relation to said cam whereby they will swing in unison, said means comprising a pawl on-said member adapted'to operatively engage a ratchet fixed on said cam, an operating lever pivoted to said pivoting member, engaging means formed on said lever and on the frame, said means constitutinga fulcrum point for said lever whereby swinging movement imparted to said lever will cause rotation of said cam through compound lever action, means whereby said lever may be fixed to said pivotal member and said engaging means rendered ineffective whereby movement imparted to said lever will cause rotation of said cam through simple lever action, said rotation of the cam actuating the head member and thereby operating the dies.

4. A device of the character described comprising a frame, a stationary die carried thereby, a head member pivoted in said frame and carrying a die for cooperation with said stationary die, a cam turnably mounted in the frame and operatively engaging said head member for operating the same, a pivoted member adapted to swing concentrically about the center of said cam, means whereby said pivoted member may be maintained fixed with relation to said cam whereby they will swing in uni son, an operating lever pivoted to said pivoted member, teeth formed on said lever about the pivotal point thereof, teeth formed on said frame adapted to be engaged by the teeth formed on the lever whereby swinging movement imparted to said lever will cause rotation of said cam through compound lever action, and means whereby disengagement of said teeth may be effected and said lever fixed to said pivotal member to permit rotation of said cam through simple lever action.

5. In a device of the character described, a frame, said frame comprising a base and a pair of spaced side frames, a shaft journalled in said frame, a head member pivoted on said shaft, stationary dies carried by the base, dies carried by the head member for cooperation with the stationary dies, a second shaft journalled in the side frames, a cam fixed thereon and operatively engaging said head member for operating the same, a ratchet wheel fixed on said shaft, a yoke mounted at one end of said shaft, a pawl carried by said yoke adapted to engage said ratchet, an operating lever pivoted to said yoke, teeth formed on said lever concentric with the pivotal point thereof, teeth formed on one of said side frames and adapted to be engaged by the teeth on said lever whereby swinging movement imparted to said lever will cause rotation of said cam through compound lever action, said teeth being in engagement only when said lever is disposed at an angle to said yoke, and means whereby said lever may be fixed to said yoke whereby swinging movement imparted to said lever will cause rotation of said cam through simple lever action, said means comprising a locking pin adapted to be inserted through ppenings formed in the yoke and in the ever.

6. A device of the character described comprising a frame having two lower dies mounted thereon, a shaft journalled in said frame, a heady member mounted on said shaft, upper dies secured on said head member adapted to cooperate with said lower dies, thus forming two independent sets of dies, a second shaft journalled in the frame,

a cam mounted thereon and operatively engaging said head member, and V a lever adapted to actuate said cam to actuate said head member to operate either of said sets of dies.

7. A device of the character described comprising a frame having two lower dies mounted thereon, a shaft journalled in said frame, a head member mounted on said shaft, upper dies secured on said head member adapted to cooperate with said lower dies, thus forming two independent sets of dies, a second shaft journalled in the frame, a cam mounted thereon and operatively engaging said head member, a ratchet secured to said cam, and a fulcrum lever having a pawl adapted to engage said ratchet to operate either of said die sets.

8. A device of the character described comprising a frame having two lower dies mounted thereon, a shaft journalled in said frame, a head member mounted on said shaft, upper dies secured on said head member adapted to cooperate with said lower dies, thus forming two independent sets of dies, a second shaft journalled in the frame, a cam mounted thereon and operatively engaging said head member, a ratchet secured to said cam, a lever pivoted on the said second shaft and carrying a pawl adapted to en gage said ratchet whereby the said lever ratchet and cam may be actuated as a unit to actuate the head member to operate either of said sets of dies with direct lever action, and adjustable means whereby compound lever action on the dies may be produced.

9. A device of the character described comprising a frame having two lower dies mounted thereon, a shaft j ourna-lled in said frame, a head member mounted on said shaft, upper dies secured on said head member adapted to cooperate with said lower dies, thus forming two independent sets of dies, a second shaft journalled in the frame, a cam mounted thereon and operatively engaging said head member, a ratchet secured to said cam, a lever pivoted on the said second shaft and carrying a pawl adapted to engage said ratchet whereby the said lever, ratchet and cam may be actuated as a unit to actuate the head member to operate either of said sets of dies with direct lever action and adjustable means associated with the lever and the frame whereby the lever may be adjusted to produce compound lever action on the dies.

10. A device of the character described comprising a frame having two lower dies mounted thereon, a shaft journalled in said frame, a head member mounted on said shaft, upper dies secured on said head memher adapted to cooperate'with said lower dies, thus forming two independent sets of dues, a second shaft Journailed 111 the frame,

a cam mounted thereon and operatively engaging said head member, a ratchet secured to said cam, a ]ever pivoted on the said second shaft and carrying a pawl adapted EDWARD J. DREIS. 

